mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.6 KiB
46 lines
1.6 KiB
/* |
|
* RAW DNxHD (SMPTE VC-3) demuxer |
|
* Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@gmail.com> |
|
* Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de> |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include "libavutil/intreadwrite.h" |
|
#include "avformat.h" |
|
#include "rawdec.h" |
|
#include "libavcodec/dnxhddata.h" |
|
|
|
static int dnxhd_probe(const AVProbeData *p) |
|
{ |
|
int w, h, compression_id; |
|
if (p->buf_size < 0x2c) |
|
return 0; |
|
if (ff_dnxhd_parse_header_prefix(p->buf) == 0) |
|
return 0; |
|
h = AV_RB16(p->buf + 0x18); |
|
w = AV_RB16(p->buf + 0x1a); |
|
if (!w || !h) |
|
return 0; |
|
compression_id = AV_RB32(p->buf + 0x28); |
|
if ((compression_id < 1235 || compression_id > 1260) && |
|
(compression_id < 1270 || compression_id > 1274)) |
|
return 0; |
|
return AVPROBE_SCORE_MAX; |
|
} |
|
|
|
FF_DEF_RAWVIDEO_DEMUXER(dnxhd, "raw DNxHD (SMPTE VC-3)", dnxhd_probe, NULL, AV_CODEC_ID_DNXHD)
|
|
|